Integrate mysql datetime precision.

[nisanov]

Greetings,

This incorporates mysql datetime precision.

Need help cleaning this up for other database drivers if necessary.

Not sure why formatDatetime was doing what it was doing instead of just setting the timezone on the datetime instance, the code snip was required to get the datetime precision to carry over, so please advise as necessary.

Thank you.

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@3a88162). Click here to learn what that means.
The diff coverage is 85.71%.

@@            Coverage Diff            @@
##             master      #74   +/-   ##
=========================================
  Coverage          ?   92.58%           
  Complexity        ?     1489           
=========================================
  Files             ?       67           
  Lines             ?     3844           
  Branches          ?        0           
=========================================
  Hits              ?     3559           
  Misses            ?      285           
  Partials          ?        0           

Impacted Files	Coverage Δ	Complexity Δ
src/Driver/MySQL/Schema/MySQLColumn.php	91.80% <83.33%> (ø)	22.00 <2.00> (?)
src/Driver/Driver.php	77.02% <100.00%> (ø)	90.00 <0.00> (?)

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